App keeps asking merchant to reinstall

Hi there, we use the shopify_app Ruby gem alongside with the CDN AppBridge.

A few merchants started reporting an issue when they try to open the app, it redirects them to the install page, asking them to enter the shop’s URL. This is usually an indication that the shop param is missing.

We have not updated the app in a few weeks, so I believe this might have something to do with AppBridge. We did notice a change in how it now handles Unauthorized requests, which broke another piece of functionality, so it might be related.

Is anyone hearing a similar story from merchants?